elementa 5 134 s9

Table S1: Meteorological conditions during the field campaign Summary of meteorological conditions during the Nov-Dec 2014 field campaign and estimated boundary layer heights from aircraft (a,b) and/or LIDAR observations (lower and higher values observed over the duration of the experiment, c). Date (mm/dd/yy)

Time(local)

Udir (deg)

11/13/14

11:45-15:30

8.0 ± 0.8 296 ± 9

11/14/14

12:20-15:50

4.2 ± 0.7 272 ± 13

11/17/14

12:45-15:40

12 ± 1

11/19/14

11:30-14:30

15 ± 2

11/20/14

12:00-15:25

10 ± 1

11/21/14

11:50-14:40 12:15-14:40 12:05-15:40 12:05-15:10

11/25/14 12/01/14 12/03/14

272 ± 9 240 ± 8 259 ± 7

zi determination for emission rate calculation

zi (m) 1250c – 1440c a

LIDAR

b

960 - 1250

2 VPs

1060a [1060c-1345c] a

c

c

1000 [1106 -1250 ] a

b

LIDAR LIDAR and VP

990 - 1120

2 VPs

5.0 ± 0.6 139 ± 11 6.6 ± 0.7 265 ± 8

495a - 495b 625c – 675c

2 VPs LIDAR

8.6 ± 0.9 18 ± 37 7.2 ± 1.1 275 ± 12

710a - 780b 825a - 730b

2 VPs 2 VPs

U = perpendicular wind speed, downwind transects zi = boundary layer height VP = vertical profile uncertainties = 1sigma a

VP performed upwind the city, at the beginning of the MBE

b

VP performed downwind the city, at the end of the experiment

c

LIDAR observations.